WO2019128589A1 - 一种电机控制器 - Google Patents

一种电机控制器 Download PDF

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Publication number
WO2019128589A1
WO2019128589A1 PCT/CN2018/117474 CN2018117474W WO2019128589A1 WO 2019128589 A1 WO2019128589 A1 WO 2019128589A1 CN 2018117474 W CN2018117474 W CN 2018117474W WO 2019128589 A1 WO2019128589 A1 WO 2019128589A1
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WIPO (PCT)
Prior art keywords
motor controller
disposed
output port
input
controller according
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PCT/CN2018/117474
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English (en)
French (fr)
Inventor
郑春龙
张新林
陈竹
彭再武
言艳毛
王钱超
曾鹏
朱晨菡
沈泽华
陈日
Original Assignee
湖南中车时代电动汽车股份有限公司
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Publication of WO2019128589A1 publication Critical patent/WO2019128589A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
    • H05K5/0069—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units having connector relating features for connecting the connector pins with the PCB or for mounting the connector body with the housing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings

Definitions

  • the present invention relates to a motor controller, and more particularly to a motor controller for controlling and driving a motor in an electric vehicle.
  • the new energy vehicle refers to the automobile with advanced technology, new technology and new structure, which adopts unconventional vehicle fuel as the power source and integrates advanced technologies in power control and driving of the vehicle.
  • the electric vehicle is a vehicle driven by a motor, and is an important new energy vehicle.
  • electric vehicles Compared with traditional cars, electric vehicles have the advantages of low pollution and energy conservation, and thus become an important direction for the future development of the automotive field.
  • Electric vehicles are driven by electric motors, so the motor controller is one of the core components of electric vehicles.
  • the role of the motor controller is to convert the current to control the motor's operation.
  • the motor controller is characterized by high electromagnetic radiation.
  • the electromagnetic interference generated during the operation of the motor controller affects the output of the low voltage signal inside and outside the motor controller.
  • external electromagnetic radiation also affects the electrical component signals inside the motor controller.
  • the present invention proposes a motor controller that is capable of avoiding electromagnetic radiation from interfering with internal components of the motor controller.
  • a motor controller includes a case.
  • a shielding barrier is disposed inside the casing to divide the interior of the casing into an upper space and a lower space.
  • the motor controller according to the present invention further includes a low voltage device disposed in the lower space, and a high voltage device disposed in the upper space.
  • a low voltage socket is provided on one side of the housing. Wherein the low voltage device is connected to the low voltage socket, and the low voltage socket is disposed in an area on the side corresponding to the lower space.
  • an input and output port is also provided on the side of the case.
  • the high voltage device is connected to the input and output port, and the input and output port is disposed in an area on the side corresponding to the upper space.
  • the sides of the case include a relatively convex convex surface and a relatively concave concave surface.
  • the input and output port is disposed on the convex surface
  • the low voltage socket is disposed on the concave surface.
  • the input and output ports are connected to a shielded wire harness.
  • a grounded EMC cable clamp is disposed on the input and output port such that the shielded wire harness is grounded through the EMC cable clamp.
  • the low voltage device comprises a control board
  • the high voltage device comprises a current conversion module
  • the current conversion module includes a driver board, a power semiconductor device, and a capacitor.
  • the input and output port includes a three-phase output port that connects the power semiconductor device, and a DC input port that connects the capacitor.
  • the power semiconductor device is an IGBT.
  • a heat sink is provided within the shielding barrier.
  • the IGBT is fixed on the shielding spacer, and the driving board is disposed on the IGBT.
  • the heat dissipation surface of the IGBT faces the shielding interlayer.
  • the case includes a case body, an upper cover plate disposed at an upper end of the case body, and a lower cover plate disposed at a lower end of the case body.
  • the upper cover and the lower cover are connected to the main body of the box through a sealing member.
  • the seal is a conductive seal.
  • the present invention can provide the following technical effects.
  • the casing is divided into two layers, wherein high voltage devices (for example, driving plates, IGBTs, capacitors, etc.) are disposed on the upper layer of the casing, and low voltage devices (such as control panels, etc.) are disposed in the casing.
  • high voltage devices for example, driving plates, IGBTs, capacitors, etc.
  • low voltage devices such as control panels, etc.
  • the lower layer of the body In this way, by layering the high voltage device and the low voltage device, it is possible to reduce the interference of the high voltage device, especially the IGBT, on the control board during operation.
  • a heat sink is disposed in the shield spacer, and a heat radiating surface of the IGBT faces the shield spacer. This allows the heat generated by the high voltage device to be effectively dissipated, preventing the high voltage device from overheating.
  • the three-phase output port and the DC output port are respectively connected to the shielded wire harness, and the shielded wire harness is grounded through the EMC cable clamp, so that the wire harness shielding distance is minimized, thereby effectively improving the shielding performance of the entire wire harness.
  • the casing includes a casing main body, an upper cover plate disposed at an upper end of the casing main body, and a lower cover plate disposed at a lower end of the casing main body.
  • the case and the cover are connected by a conductive rubber to form an electric conductor having the same electric potential, and thus it is possible to effectively shield internal and external electromagnetic interference.
  • Figure 1 is a schematic cross-sectional view showing a motor controller according to an embodiment of the present invention, showing the internal structure of the motor controller;
  • FIG. 2 is a schematic plan view of a motor controller in accordance with an embodiment of the present invention with the upper cover of the motor controller removed for clarity;
  • Figure 3 is a schematic side view of a motor controller in accordance with one embodiment of the present invention.
  • Fig. 4 schematically shows a bottom view of a motor controller in accordance with an embodiment of the present invention with the lower cover of the motor controller removed for clarity.
  • FIG. 1 schematically shows a motor controller 100 in accordance with one embodiment of the present invention.
  • the motor controller 100 according to the present invention is particularly useful in electric vehicles.
  • a motor controller 100 includes a casing 1, which is substantially configured in the shape of a rectangular parallelepiped.
  • a shielding barrier 19 is provided in the casing 1.
  • the shielding barrier 19 is configured, for example, in the form of a plate and is horizontally disposed in the middle of the casing 1, thereby dividing the casing 1 into two portions, that is, an upper space 41 above the shielding partition 19, and located at The lower space 42 below the barrier 19 is shielded.
  • a plurality of input/output ports 12 and a low voltage socket 15 are provided on the side of the casing 1.
  • the input and output port 12 and the low voltage socket 15 may be provided on different sides of the case 1, but are preferably provided on the same side of the case 1, for example as clearly shown in Figures 3 and 4.
  • the input/output port 12 is disposed in a region on the side of the casing 1 corresponding to the upper space 41, and the low-voltage socket 15 is disposed on the side of the casing 1 corresponding to the lower space 42. Within the area.
  • the motor controller 100 according to the present invention further includes a low voltage device that is disposed in the lower space 42 within the casing 1. Meanwhile, the motor controller 100 according to the present invention further includes a high voltage device which is disposed in the upper space 41 inside the casing 1.
  • the motor controller 100 In the operation of the motor controller 100 according to the present invention, since the casing 1 is divided into the upper space 41 and the lower space 42 through the shield partition 19, the high voltage device and the low voltage device are respectively disposed in different spaces. With this arrangement, electromagnetic interference generated by the high voltage device can be effectively prevented from affecting the operation of the low voltage device, thereby ensuring normal operation of various devices. When the motor controller 100 according to the present invention is used in an electric vehicle, such an arrangement can ensure that the electric vehicle runs smoothly and safely.
  • the input and output port 12 is connected to the shield harness 14, and a grounded EMC cable clamp 13 is disposed on the input and output port 12.
  • the shielded wire harness 14 is grounded through the EMC cable clamp 13. Therefore, in the present embodiment, by arranging the shield harness 14 to be grounded via the EMC cable clamp 13, the harness shielding distance can be minimized. Thereby, the shielding effectiveness of the entire wire harness is effectively improved.
  • the low voltage device includes a control board 2.
  • the control board 2 is connected to the low voltage socket 15 so that the control board 2 can transmit data to the outside of the cabinet 1 through the low voltage socket 15.
  • the high voltage device includes a current conversion module 3.
  • the current conversion module 3 includes a driving board 31, a power semiconductor device 32, and a capacitor 33 (see FIG. 2).
  • the power semiconductor device 32 can be an IGBT.
  • Power semiconductor device 32 and capacitor 33 are arranged to connect respective input and output ports 12 through busbars, respectively.
  • the motor controller 100 When the motor controller 100 according to the present invention is operating, a low voltage signal is transmitted from the power semiconductor device 32 to the drive board 31 and finally fed back to the control board 2. Thereafter, the control board 2 outputs a low voltage signal to the outside through the low voltage socket 15.
  • the high voltage device and the control board 2 in the current conversion module 3 are located in the upper space 41 and the lower space 42, and thus are isolated from each other.
  • the electromagnetic field generated by the high voltage device during operation is shielded by the shielding barrier 19, thereby effectively preventing the electromagnetic field from interfering with the low voltage control circuit in the lower space 42.
  • the input and output port 12 includes a three-phase output port, such as the U, V, W interface shown in FIG.
  • a power semiconductor device 32 is coupled to the three-phase output port for outputting three-phase alternating current.
  • the input and output port 12 also includes a DC input port that can be connected to the capacitor 33 and input DC power.
  • the three-phase output port and the DC input port are arranged side by side on the upper side of one side of the case 1 (the side on the left side in the illustrated embodiment), that is, the case in the case 1 In the area on the side corresponding to the upper space 41 of the casing 1.
  • the input/output port 12 can be easily connected to the high voltage device provided in the upper space 41 of the casing 1.
  • a heat sink (not shown) is provided within the shielding barrier 19 of the housing 1.
  • the arrangement of the heat sink can effectively prevent the electronic device from overheating and causing damage.
  • the heat sink in the shield spacer 19, the space occupied by the heat sink is reduced, thereby providing the motor controller 100 with more space for mounting other electronic components.
  • the casing 1 is partitioned into the lower space 42 and the upper space 41 by the shield partition 19, and a high pressure which generates a high heat during operation is provided in the upper space 41. The device thus further improves the heat dissipation capability of the motor controller 100 while saving space.
  • the motor controller 100 When the motor controller 100 according to the present invention is operated, not only the space effective isolation between the low voltage control circuit and the high voltage and high current components can be achieved by the shielding barrier 19 provided, and the high voltage in the upper space 41 is effectively prevented.
  • the interference of the device to the low-voltage control circuit in the lower space 42 can also effectively dissipate heat, prevent the device from overheating and affect the operation of the device, and even cause device damage.
  • power semiconductor device 32 eg, an IGBT
  • drive board 31 is disposed on power semiconductor device 32 (eg, an IGBT).
  • the heat dissipation surface of the power semiconductor device 32 is disposed toward the shield spacer 19. That is, in the illustrated embodiment, the heat sink surface of the power semiconductor device 32 (eg, IGBT) faces downward, so that heat can be efficiently transferred to the heat sink disposed in the shield spacer 19, thereby improving the motor.
  • the heat dissipation efficiency of the controller 100 is provided to shield spacer 19
  • the case 1 includes a case main body 11, an upper cover 16 provided at an upper end of the case main body 11, and a lower cover 17 provided at a lower end of the case main body 11.
  • the case body 11 is made of metal
  • the upper cover 16 and the lower cover 17 are both made of the same metal material.
  • Both the upper cover 16 and the lower cover 17 are connected to the case main body 11 through a seal to form a sealed case.
  • the seal is a conductive sealing ring 18.
  • the upper cover 16 and the lower cover 17 are both made of a metal material, after they are connected to each other through the conductive sealing ring 18, the case body 11.
  • the upper cover 16 and the lower cover 17 are formed as electrical conductors of the same potential by conductive rubber. In this way, the influence of the external signal on the device in the casing 1 can be shielded by the casing 1, and the signal in the casing 1 can be shielded from the external device.
  • one side of the box body 11 includes two portions, a relatively convex convex surface 20 and a relatively concave concave surface 21, which may be connected by a stepped surface.
  • the three-phase output port and the DC output port are disposed on the convex surface 20, and the low-voltage socket 15 is disposed on the concave surface 21.
  • the input and output port 12 is not in the same plane as the low voltage socket 15, facilitating cable connection so that it is not affected or hindered during the wiring process. It is easily understood that a similar effect can be achieved by arranging the three-phase output port and the DC output port on the concave surface 21 and the low-voltage socket 15 on the convex surface 20.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inverter Devices (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

本发明提供了一种电机控制器，包括箱体（1）。在箱体（1）的内部设置有屏蔽隔层（19），从而将箱体（1）的内部分隔成上部空间（41）和下部空间（42）。本发明的电机控制器还包括设置在下部空间（42）内的低压器件；以及设置在所述上部空间（41）内的高压器件。

Description

一种电机控制器 技术领域
本发明涉及一种电机控制器，尤其涉及用于在电动汽车中控制和驱动电机工作的电机控制器。
背景技术
新能源汽车是指采用非常规的车用燃料作为动力来源，综合车辆的动力控制和驱动方面的先进技术，所形成的技术原理先进、具有新技术、新结构的汽车。其中，电动汽车是通过电机来驱动行驶的交通工具，是一种重要的新能源汽车。相比于传统的汽车而言，电动汽车具有低污染、节约能源等优点，因此成为未来汽车领域发展的重要方向。
电动汽车是通过电机驱动行驶的，因此，电机控制器是电动汽车的核心部件之一。电机控制器的作用是转化电流，以控制电机工作。但是，作为开关器件，电机控制器具有高电磁辐射的特点。在电机控制器工作的过程中所产生的电磁干扰会影响电机控制器内部和外部的低压信号的输出。同时，外部的电磁辐射也会影响电机控制器内部的电器元件信号。
发明内容
针对上述问题，本发明提出了一种电机控制器，其能够避免电磁辐射对电机控制器的内部器件造成干扰。
根据本发明的电机控制器包括箱体。在所述箱体的内部设置有屏蔽隔层，从而将所述箱体的内部分隔成上部空间和下部空间。根据本发明的电机控制器还包括设置在所述下部空间内的低压器件，以及设置在所述上部空间内的高压器件。
在一个优选的实施例中，在所述箱体的一个侧面设置有低压插座。其中，所述低压器件与所述低压插座相连，并且所述低压插座设置在所述侧面上的对应于所述下部空间的区域内。
在一个优选的实施例中，在所述箱体的所述侧面还设置有输入输出端口。其中，所述高压器件与所述输入输出端口相连，并且所述输入输出端口设置在所述 侧面上的对应于所述上部空间的区域内。
在一个优选的实施例中，所述箱体的所述侧面包括相对凸出的凸面和相对凹进的凹面。其中，所述输入输出端口设置在所述凸面上，而所述低压插座设置在所述凹面上。
在一个优选的实施例中，所述输入输出端口连接有屏蔽线束。在所述输入输出端口上设置接地的EMC电缆夹，使得所述屏蔽线束通过所述EMC电缆夹接地。
在一个优选的实施例中，所述低压器件包括控制板，所述高压器件包括电流转换模块。
在一个优选的实施例中，所述电流转换模块包括驱动板、功率半导体器件以及电容。
在一个优选的实施例中，所述输入输出端口包括连接所述功率半导体器件的三相输出端口，以及连接所述电容的直流输入端口。
在一个优选的实施例中，所述功率半导体器件为IGBT。
在一个优选的实施例中，在所述屏蔽隔层内设有散热器。
在一个优选的实施例中，所述IGBT固定在所述屏蔽隔层上，所述驱动板设置在所述IGBT上。其中，所述IGBT的散热面朝向所述屏蔽隔层。
在一个优选的实施例中，所述箱体包括箱体主体、设置在所述箱体主体的上端的上盖板，以及设置在所述箱体主体的下端的下盖板。其中，所述上盖板和下盖板均通过密封件与所述箱体主体相连。
在一个优选的实施例中，所述密封件为导电密封圈。
与现有技术相比，本发明能够提供如下技术效果。
在根据本发明的电机控制器中，箱体分为两层，其中，高压器件(例如驱动板、IGBT和电容等)设置在箱体的上层，而低压器件(例如控制板等)设置在箱体的下层。这样，通过分层隔离高压器件和低压器件，就可以降低高压器件，尤其是IGBT在工作过程中对控制板所产生的干扰。
在根据本发明的电机控制器中，在所述屏蔽隔层内设有散热器，而且所述IGBT的散热面朝向所述屏蔽隔层。这就使得高压器件所产生的热量能够被有效地散发，避免高压器件过热。
在根据本发明的电机控制器中，三相输出端口和直流输出端口分别连接屏蔽线束，而屏蔽线束通过EMC电缆夹接地，使得线束屏蔽距离达到最短化，从而 有效提高了整个线束的屏蔽效能。
在根据本发明的电机控制器中，箱体包括箱体主体、设置在箱体主体上端的上盖板，以及设置在箱体主体下端的下盖板。箱体与盖板通过导电橡胶连接，从而形成为具有同一电位的导电体，因而能够有效地屏蔽内部和外部的电磁干扰。
附图说明
在下文中将参照附图来对根据本发明的示例性实施方案进行更加详细的描述，在图中：
图1示意性地显示了根据本发明的一个实施方案的电机控制器的剖视图，显示了电机控制器的内部结构；
图2示意性地显示了根据本发明的一个实施方案的电机控制器的俯视图，其中为清楚起见去掉了电机控制器的上盖板；
图3示意性地显示了根据本发明的一个实施方案的电机控制器的侧视图；
图4示意性地显示了根据本发明的一个实施方案的电机控制器的仰视图，其中为清楚起见去掉了电机控制器的下盖板。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例绘制。
具体实施方式
下面将结合附图对本发明作进一步说明。
图1示意性地显示了根据本发明的一个实施例的电机控制器100。根据本发明的电机控制器100尤其是可用于电动汽车中。
如图1所示，根据本发明的电机控制器100包括箱体1，该箱体1大致构造成长方体的形状。根据本发明，在箱体1内设置有屏蔽隔层19。该屏蔽隔层19例如构造成板状，并且水平地设置在箱体1的中部，从而将所述箱体1分隔为两个部分，即，位于屏蔽隔层19上方的上部空间41，以及位于屏蔽隔层19下方的下部空间42。
如图1和2所示，在箱体1的侧面上设置有若干个输入输出端口12和低压插座15。输入输出端口12和低压插座15可以设置在箱体1的不同侧面上，然而优选地设置在箱体1的同一侧面上，例如如图3和4所清楚地示出。根据本发明的一个优选的实施例，输入输出端口12设置在箱体1的侧面上的对应于上部空间41的区域内，而低压插座15设置在箱体1的侧面上的对应于下部空间42 的区域内。
根据本发明的电机控制器100还包括低压器件，其设置在箱体1内的下部空间42中。同时，根据本发明的电机控制器100还包括高压器件，其设置在箱体1内的上部空间41中。
在根据本发明的电机控制器100工作时，由于箱体1通过屏蔽隔板19分成了上部空间41和下部空间42，从而将高压器件和低压器件分别设置在不同的空间内。通过这种设置，就能够有效地避免了高压器件产生的电磁干扰影响低压器件的运行，从而保证了各种器件的正常操作。当根据本发明的电机控制器100用于电动汽车时，这种设置能够保障电动汽车平稳安全地行驶。
在根据本发明的一个实施例中，如图2所示，输入输出端口12与屏蔽线束14相连，并且在输入输出端口12上设置了接地的EMC电缆夹13。这样，屏蔽线束14通过EMC电缆夹13接地。因此，在本实施例中，通过将屏蔽线束14设置成经由EMC电缆夹13接地，可以使线束屏蔽距离达到最短化。由此，有效地提高了整个线束的屏蔽效能。
如图1所示，在根据本发明的一个实施例中，低压器件包括控制板2。该控制板2与低压插座15相连，使得控制板2能够通过低压插座15向箱体1的外部传输数据。另外，高压器件包括电流转换模块3。在本实施例中，电流转换模块3包括驱动板31、功率半导体器件32，以及电容33(见图2)。优选地，功率半导体器件32可以为IGBT。功率半导体器件32和电容33设置成分别通过母排而连接相应的输入输出端口12。
在根据本发明的电机控制器100工作时，低压信号从功率半导体器件32传输到驱动板31，最终反馈给控制板2。之后，控制板2将低压信号通过低压插座15输出给外部。显然，根据本发明的设置，电流转换模块3中的高压器件与控制板2分处于上部空间41和下部空间42，因此彼此之间相互隔离。这样，高压器件在工作时所产生的电磁场会被屏蔽隔层19所屏蔽，从而有效地阻止该电磁场对处于下部空间42内的低压控制电路的干扰。
在一个实施例中，输入输出端口12包括三相输出端口，例如在图3中示出的U、V、W接口。功率半导体器件32连接所述三相输出端口，用于输出三相交流电。输入输出端口12还包括直流输入端口，其可连接电容33并输入直流电。在本实施例中，所述三相输出端口和直流输入端口并排地设置在箱体1的一个侧面(在图示实施例中为处于左侧的侧面)的上部，即处于箱体1的该侧面上的与 箱体1的上部空间41相对应的区域内。这样，输入输出端口12就能够方便地与设置在箱体1的上部空间41内的高压器件连接。
在一个实施例中，如图2和图4所示，在所述箱体1的屏蔽隔层19内设有散热器(未示出)。散热器的设置能够有效地避免电子器件过热而造成损伤。在本实施例中，通过将散热器设置在屏蔽隔层19中，减少了散热器所占用的空间，从而为电机控制器100提供了更多的用于安装其它电子元器件的空间。另外，在根据本发明的电机控制器100中通过屏蔽隔层19将箱体1分隔为下部空间42和上部空间41，并且在上部空间41中设置了在工作过程中会产生较高热量的高压器件，因此在节约了空间的同时还进一步提高了电机控制器100的散热能力。
在根据本发明的电机控制器100工作时，通过所设置的屏蔽隔层19，不仅能实现低压控制电路和高压大电流部件之间在空间上的有效隔离，有效地阻止上部空间41内的高压器件对下部空间42内的低压控制电路的干扰，还能够有效地散热，避免器件过热而影响器件运行，甚至导致器件损坏。
在一个实施例中，功率半导体器件32(例如IGBT)固定在屏蔽隔层19上，而驱动板31设置在功率半导体器件32(例如IGBT)上。其中，功率半导体器件32(例如IGBT)的散热面朝向屏蔽隔层19设置。也就是说，在图示的实施例中，功率半导体器件32(例如IGBT)的散热面朝下，从而能将热量有效地传递给设置在屏蔽隔层19中的散热器，由此提高了电机控制器100的散热效率。
在一个实施例中，箱体1包括箱体主体11、设置在箱体主体11的上端的上盖板16，以及设置在箱体主体11的下端的下盖板17。优选地，箱体主体11为金属的，并且上盖板16和下盖板17均采用相同的金属材质制成。上盖板16和下盖板17均通过密封件与所述箱体主体11相连，以形成密闭的箱体。优选地，所述密封件为导电密封圈18。
在根据本发明的电机控制器100的工作期间，由于箱体主体11、上盖板16和下盖板17均采用金属材质制成，因此在它们通过导电密封圈18彼此连接后，箱体主体11、上盖板16和下盖板17通过导电橡胶形成为同一电位的导电体。这样，通过箱体1可以屏蔽外部信号对箱体1内的器件所造成的影响，同时也能够屏蔽箱体1内的信号干扰外部的设备。
在一个实施例中，所述箱体主体11的一个侧面包括两个部分，即相对凸出的凸面20和相对凹进的凹面21，它们之间可以通过一个台阶面相连。在这种情况下，三相输出端口和直流输出端口设置在凸面20上，而低压插座15设置在凹 面21上。通过这种设置，输入输出端口12与低压插座15不在同一平面内，便于线缆连接，使得在接线过程中不会受到影响或阻碍。容易理解，将三相输出端口和直流输出端口设置在凹面21上而低压插座15设置在凸面20上也能实现类似的效果。
虽然已经参考优选实施例对本发明进行了描述，但在不脱离本发明的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。
部件列表
1 箱体
2 控制板
3 电流转换模块
11 箱体主体
12 输入输出端口
13 EMC电缆夹
14 屏蔽线束
15 低压插座
16 上盖板
17 下盖板
18 导电密封圈
19 屏蔽隔层
20 凸面
21 凹面
31 驱动板
32 功率半导体器件
33 电容

Claims (13)

  1. 一种电机控制器，包括：
    箱体(1)，在所述箱体(1)的内部设置有屏蔽隔层(19)，从而将所述箱体(1)的内部分隔成上部空间(41)和下部空间(42)；
    设置在所述下部空间(42)内的低压器件；以及
    设置在所述上部空间(41)内的高压器件。
  2. 根据权利要求1所述的电机控制器，其特征在于，在所述箱体(1)的一个侧面设置有低压插座(15)，所述低压器件与所述低压插座(15)相连，其中，所述低压插座(15)设置在所述侧面上的对应于所述下部空间(42)的区域内。
  3. 根据权利要求2所述的电机控制器，其特征在于，在所述箱体(1)的所述侧面还设置有输入输出端口(12)，所述高压器件与所述输入输出端口(12)相连，其中，所述输入输出端口(12)设置在所述侧面上的对应于所述上部空间(41)的区域内。
  4. 根据权利要求3所述的电机控制器，其特征在于，所述箱体(1)的所述侧面包括相对凸出的凸面(20)和相对凹进的凹面(21)，其中，所述输入输出端口(12)设置在所述凸面(20)上，而所述低压插座(15)设置在所述凹面(21)上。
  5. 根据权利要求3或4所述的电机控制器，其特征在于，所述输入输出端口(12)连接有屏蔽线束(14)，并且在所述输入输出端口(12)上设置接地的EMC电缆夹(13)，使得所述屏蔽线束(14)通过所述EMC电缆夹(13)接地。
  6. 根据权利要求3到5中任一项所述的电机控制器，其特征在于，所述低压器件包括控制板(2)，所述高压器件包括电流转换模块(3)。
  7. 根据权利要求6所述的电机控制器，其特征在于，所述电流转换模块(3)包括驱动板(31)、功率半导体器件(32)以及电容(33)。
  8. 根据权利要求7所述的电机控制器，其特征在于，所述输入输出端口(12)包括连接所述功率半导体器件(32)的三相输出端口，以及连接所述电容(33)的直流输入端口。
  9. 根据权利要求7所述的电机控制器，其特征在于，所述功率半导体器件(32)为IGBT。
  10. 根据权利要求1至9中任一项所述的电机控制器，其特征在于，在所述 屏蔽隔层(19)内设有散热器。
  11. 根据权利要求9所述的电机控制器，其特征在于，所述IGBT固定在所述屏蔽隔层(19)上，所述驱动板(31)设置在所述IGBT上，其中，所述IGBT的散热面朝向所述屏蔽隔层(19)。
  12. 根据权利要求1至11中任一项所述的电机控制器，其特征在于，所述箱体(1)包括箱体主体(11)、设置在所述箱体主体(11)的上端的上盖板(16)，以及设置在所述箱体主体(11)的下端的下盖板(17)，其中，所述上盖板(16)和下盖板(17)均通过密封件与所述箱体主体(11)相连。
  13. 根据权利要求12所述的电机控制器，其特征在于，所述密封件为导电密封圈(18)。
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